Designer babies

If I could have been designed to be super-strong, super-smart, and superhuman in any way, I would have wanted it.

So here’s an important ethical question. Which is wrong: to tell a child who clearly has no way of being a world class marathoner that they can do anything; or to design a child who can be a world class marathoner?

Or, which is wrong: to tell a child born with Down Syndrome that they can be anything; or to design a child that doesn’t have Down Syndrome?

And consider how awesome it would be (will be?) to live in a world where ex post (that is: after birth) changes are possible. Then, we could honestly say to ourselves or our children that you can be anything you want to be.